Sound transmitter and receiver.



- PATENTED A A... 3.. MUNDYJ SOUND TRANSMITTER AND RECEIVER. APPLICATIONTILE D APR 23 I902 NO MODEL.

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No. 768,571 v PATENTED AUG I A. J.- MUNDY.

SOUND TRANSMITTER ANDRECEIVER.

I APPLICATIONIILEDAPE.23,1902. no xomm. 2 an:

' Patented August 23, 1904.

UNITE STATES i 'riTEiNi iOrFIcE. I

airrnun J. imam, OF BOSTON, MAssAcHosErrs, assroxoa TO SUBMA- RINESIGNAL COMPANY, or WATERVI'LLE, MAINE, A CORPORATION OF MAINE.

SPECIFICATION forming part of Letters Patent No. 768,571, dated August23, 1.904.

7 Application filed April '43, 1992. Serial No. 104,301. (No modelJ' Toall whom it may concern:

Be it known that LARTH R J. MUNDY,ac'itizen of the United States, and avresident of Boston, in the county of Sutioll: and State of 5Massachusetts, have invented a new and useful Improvement; in'SoundTransmitters and Receivers, of which the following is a full, clear, andexact description, reference being bad to the accompanying drawings,forming a part of this specification, in explaining its nature.

The invention relates to asound transmitter and receiver adapted toreceive sound-vibrations imparted to' water by a submerged sound- 15signaling apparatus and transferred by the water from the signalingapparatus to the transmitter and wherever said transmitter may be usedin the water.

It consists in the employment of an electrical sound transmitterpreferably in conjunction with a resonating tube within which thetransmitter is contained and the position of which may be varied oradjusted therein. I have discovered that a transmitter and a 5resonating tube thus associated produce a magnifying effect upon thetransmission of the sound-vibrations,the value of which is indicated bythe increased power with which they are delivered by the receiver.

Referring to the drawings-Figure 1 is a view.in elevation of theassembled receiving apparatus. Fig. 2 is a detail view in crosssectionof the transmitter.

Referring to the drawings, A represents the resonating, tube; B, thewater in which it is submerged; C, the water which is contained therein;D, the electrical transmitter submerged in the water in the tube, and Ethe receiver, which is shown in duplex form and which is in electricalconnection with the transmitter. within the tube may be variedlengthwise it, and the tube may be wholly iiilcd with water, asrepresented in the figures, 'or partially tilled with it. It ispreferable that. the. transmitter should be axially located in the tube,as I have ascertained that the resonating tube also acts to focus thesound, but not necessarily uniformly. The sound-vibrations imparted 5 tothe water by..t he s'ubmerged signaling zip:

The position of the transmitter paratus are by ittransferred, and-theresonatingtube. receives such vibrations, amplifies them, transmits themto the water contained in the tube, which in turn delivers thevibrations'to the electrical transmitter.

While I have described the resonating tube as containing water and whileI prefer to emthereoflan'd a sound-receiver electrically cons nectcdwith the transmitter. I I

3. A sound transmitter and receiver, the same comprising a resonatingtube filled with a vibratory fluid medium, an electric transmittersubmerged within the tube in said medium, and a sound-receiverelectrically connected with the transmltter. g

4. A resonating tube submerged in water and adapted to receivesound-vibrations imparted to the water and transferred by it, the saidtube also being filled with water, an electric transmitter containedin'said tube, and a receiver electrically connected with thesound-transmitter.

5. In an apparatus forreceiving intelligence conveyed by sound waves, aresonating tube, a transmitter contained therein in combina: tion withresponsive means in operative relation thereto.

6. A resonating tube submerged in water and adapted to-receivesound-vibrations imparted to the water and transferred by it, anelectric transmitter contained in said tube and a responsive means inelectric circuit with said transmitter. Y

O .ARTHUR J. MUNDY. Witnesses: v

F. F. RAYMOND, 2d, J. M. DOLAN.

